4-Amino-3,5-dichlorophenacylbromide

4-Amino-3,5-dichlorophenacylbromide is a compound useful in organic synthesis.

Yellow Solid

1-(4-Amino-3,5-dichlorophenyl)-2-bromoethanone Hydrobromide is an intermediate in synthesizing Clenproperol-d7 (C573002). A labelled related drug of Clenbuterol (C569998), a β-agonist which can be used as a growth promoter in farm animals.

4-Amino-3,5-dichloro-alpha-bromoacetophenone is an impurity reference for Clenbuterol and can be used as a reference substance to analyze drug quality. It is widely used in organic synthesis and drug production.

Dissolve 4-amino-3, 5-dichloroacetophenone in chloroform and heat to 65°C. Add bromine dropwise with stirring, stir for a few minutes after adding, then add ethanol and stir. Freeze, filter out the crystals, wash with chloroform, and dry at low temperature to obtain finished products.